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Nonlinear Density Fluctuations and Spatial Heterogeneities near the Colloidal Glass Transition

Published online by Cambridge University Press:  11 February 2011

Michio Tokuyama ,
Yayoi Terada  and
I. Oppenheima
Michio Tokuyama
Affiliation:
Institute of Fluid Science, Tohoku University, Sendai 980–8577, Japan
Yayoi Terada
Affiliation:
Institute of Fluid Science, Tohoku University, Sendai 980–8577, Japan
I. Oppenheima
Affiliation:
Institute of Fluid Science, Tohoku University, Sendai 980–8577, Japan
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Abstract

How the spatial heterogeneities play an important role in the dynamics of density fluctuations near the colloidal glass transition is discussed from a new viewpoint. A nonlinear stochastic diffusion equation for the density fluctuations recently proposed by one of the present authors (MT) is numerically solved in two different initial states, an equilibrium state and a nonequilibrium state. Depending on initial states, the dynamics of the spatial heterogeneities are shown to be quite different from each other. Such differences are thus shown to influence the slow relaxations of density fluctuations, leading to different types of two-step relaxations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 754: Symposium CC – Supercooled Liquids, Glass Transition and Bulk Metallic Glasses , 2002 , CC8.11
Copyright
Copyright © Materials Research Society 2003

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References

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